Unit 3 Skeletal System Key Terms

Question 1

periosteum

Answer 1

the tough, fibrous tissue that forms the outermost covering of bone

Question 2

compact bone

Answer 2

the dense, hard, and very strong bone that forms the protective outer layer of bones.

Question 3

spongy bone

Answer 3

is lighter and not as strong as compact bone. This type of bone is commonly found in the ends and inner portions of long bones such as the femur. Red bone marrow is located within this spongy bone.

Question 4

medullary cavity

Answer 4

central cavity located in the shaft of long bones where it is surrounded by compact bone. It is here that red and yellow bone marrow are stored.

Question 5

endosteum

Answer 5

is the tissue that lines the medullary cavity

Question 6

red bone marrow

Answer 6

which is located within the spongy bone, is a hemopoietic tissue that manufactures red blood cells, hemoglobin, white blood cells, and thrombocytes.

Question 7

Hemopoietic

Answer 7

pertaining to the formation of blood cells

Question 8

yellow bone marrow

Answer 8

functions as a fat storage area

Question 9

cartilage

Answer 9

smooth, rubbery, blue-white connective tissue that acts as a shock absorber between bones

Question 10

articular cartilage

Answer 10

covers the surfaces of bones where they come together to form joints. This cartilage makes smooth joint movement possible and protects the bones from rubbing against each other

Question 11

meniscus

Answer 11

curved fibrous cartilage found in some joints